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CA890209A - Sewage back-up preventer - Google Patents

Sewage back-up preventer

Info

Publication number
CA890209A
CA890209A CA890209A CA890209DA CA890209A CA 890209 A CA890209 A CA 890209A CA 890209 A CA890209 A CA 890209A CA 890209D A CA890209D A CA 890209DA CA 890209 A CA890209 A CA 890209A
Authority
CA
Canada
Prior art keywords
preventer
sewage back
sewage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA890209A
Inventor
Natywary Nicholas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA890209A publication Critical patent/CA890209A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/02—Shut-off devices
    • E03F7/04—Valves for preventing return flow

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
CA890209A 1969-03-04 1969-03-04 Sewage back-up preventer Expired CA890209A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA44528 1969-03-04

Publications (1)

Publication Number Publication Date
CA890209A true CA890209A (en) 1972-01-11

Family

ID=4084982

Family Applications (1)

Application Number Title Priority Date Filing Date
CA890209A Expired CA890209A (en) 1969-03-04 1969-03-04 Sewage back-up preventer

Country Status (1)

Country Link
CA (1) CA890209A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047482A2 (en) * 1980-09-04 1982-03-17 Firma Helmuth Dallmer Drain with clearing aperture and removable non-return valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047482A2 (en) * 1980-09-04 1982-03-17 Firma Helmuth Dallmer Drain with clearing aperture and removable non-return valve
EP0047482A3 (en) * 1980-09-04 1982-05-19 Firma Helmuth Dallmer Drain with clearing aperture and non-return valve

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